OEM 2004 Chevrolet Impala Thermostat

2004 Chevrolet Impala Thermostat Parts Questions & Experts Answers

• Q: How to replace the thermostat on a 3.8L engine on 2004 Chevrolet Impala?

  A: The replacement process for a 3.8l engine Thermostat begins after you detach the fuel injector sight shield and cut coolant levels. Use hose clamp pliers (J 38185) to reposition the hose clamp around the water outlet housing before taking off the radiator inlet hose from this housing. The water outlet housing bolt and the stud need removal before you extract both the water outlet housing and the gasket. Thermostat removal must precede visual inspection and cleaning of the water outlet housing mating surfaces. Begin by putting the Thermostat in place then add the gasket and finally position the water outlet housing. Follow installation steps by setting the water outlet housing bolt and stud at 27 nm (20 ft. Lbs.) torque. Attach the radiator inlet hose to the water outlet housing then place the hose clamp pliers (J 38185) to relocate the hose clamp. The cooling system must be filled and the fuel injector sight shield reinstalled to complete this process.